The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

An annual extravaganza of Broadway theater memorabilia.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

The exact whereabouts of this surreal cabinet of curiosities are rarely the same place twice.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Stay in a room with a view... of the bottom of the ocean.

The 28-foot granite map plots the locations of 40 theaters in New York City.

One man is on a singular quest to name an island after a famous hip-hop artist.

The Vermont grave of a 4,000-year-old mummy prince.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

A posh members-only club with a literally dramatic history.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

The smallest country in the world.

A Borgesian work of art that may blur the line between fiction and reality a little too convincingly.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

A museum dedicated to the alleged Roswell Incident.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

New York City's smallest piece of private property.

Narrowest house in Boston.